[nos-bbs] from Brett F - Setting up for basic radio.
chris at chrismaness.com
Wed Mar 28 01:25:42 EDT 2012
Looks like he had attached audio recordings of his attempts to connect.
73's de KQ6UP
On Tue, Mar 27, 2012 at 10:16 PM, Bill Vodall <wa7nwp at gmail.com> wrote:
> Hello Brett...
> The listserver blocked your messages because of the size. There still
> may be somebody out there (I hope!!!) downloading these messages at
> 1200 baud with real TCP/IP on RF so we better not let them go through.
> Note that each of the 3 messages was right around 3 megabytes. Add
> to that the magic of email where the messages are 7 bit encoded for
> ASCI transmission and it might get another 50% larger.
> I don't have selective control of what to do with the message so all I
> can do is attach it here.
> If you're varying the TXD between .25 and .5 seconds and it's not
> making a difference, I'd wager that isn't your problem. Most nodes
> should work at .25 and it's very seldom any packet station is not
> going to work at .3 seconds or greater.
> Bill - WA7NWP
> --- from Brett --
> I did some more testing tonight. I tried connecting to a couple
> different nodes and still nothing. So then I took some recordings of
> my packets with another receiver. My apologies for the bad quality.
> The static does not exist in my transmissions, just artifacts of
> All three recordings are while trying to connect to a local network
> node, WISS, by entering "c radio wiss" at the jnos command prompt.
> The first recording is with normal settings and the following autoexec.nos:
> ax25 mycall KC9MWG
> attach asy ttyS0 - ax25 radio 4096 256 4800
> ifconfig radio description "vhf - 1200 baud port"
> param radio 2 256
> param radio 3 1
> param radio 5 0
> param radio TxDelay 25
> #ax25 bctext "my packet station"
> #ax25 bcinterval 1200
> #ax25 bc radio
> ax25 retries 3
> start ax25
> For the second recording I changed the TxDelay to 50 in the autoexec file.
> For the third recording I changed TxDelay back to 25, then changed the
> internal tnc setting txd. Txd "Sets the length of time between the
> radio PTT being activated, and the packet
> audio being generated. Duration is in bytes, where each byte is about
> 7ms." from the TT4 manual. This setting defaults to 30, for the
> recording I changed to 100.
> I am attaching the recordings to this message, hopefully the list
> won't remove them. My apologies to anyone whose inbox gets overwhelmed
> with the ~6.5 Mb.
> Again thanks for the help.
> P.S. baudrate matched at 4800bps.
> nos-bbs mailing list
> nos-bbs at tapr.org
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